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Alex作业之day 1 的homework2the requies of homework2 1:import username、password; 2:show welcome message after successful landing 3:exit after three times of wrong transmission代码： #day 1 homework 2 name='

The requires of the classroom presentation The procession of mine about the game of guessing the age: Picture: the version of wrong: #for 循环 的改进 ：每猜 3 次加一个判断:用户决定继续还是退出（有错的程序 **重置为0的i值是无法传输给循环中的

1:reading the data the function of genfromtxt: a:we read the data from the paper file b:in order to need not to specify the path,we put the data and code in the same paper filethe common form of thi

the difference of list and numpy :list : it can store any format value at the same time, such as int, str numpy:the inside of the numpy.array must be the same formatthe difference of list and tuple :

Number: int和float: 除法：int/int 得到 int型 int//int 得到 float型 （注：整除//表示只保留整数部分） 乘法：*进制转换： 二进制：0b 八进制：0o 十六进制：0x 转换： bin(10) 十进制转换为二进制 int(0b111) 二进制转换为十进制 oct(0b111)